Report Generated 12/01/2020 at 0727

Page Description

2 - Mean Daily Water Temperature, Release Flow Rates and Air Temperatures with Monthly Averages

3 - Redding 10-Day Forecasted Air Temperatures

4 - Sacramento River Mean Daily Water Temperature, Air Temperature and 10-Day Forecasted Air Temperature Plot

- Water Temperature Measuring Station Details

- Temperature Control Point Details

5 - Shasta Lake Isothermobaths & Cold Water Pool Statistics

14 - Trinity Lake Isothermobaths & Cold Water Pool Statistics

23 - Whiskeytown Lake Isothermobaths & Cold Water Pool Statistics

x - TCD Configuration (External Link)

All Data in this Report is Preliminary and Subject to Change

Northern CVP Water Temperature Report

November - 2020
Shasta 

Generation 

Spring 

Creek P.P.

Keswick 

Total BSF RDB

Oct 4797 763 5762 63.8 67.2

11/01 54.8 54.8 54.9 54.2 54.3 54.6 54.5 54.8 55.1 55.1 53.7 48.7 48.2 49.3 4246 372 5015 62.5 55.0 59.1

11/02 54.7 54.3 55.0 54.4 54.4 54.8 54.7 54.9 55.1 55.2 53.7 48.7 48.3 49.3 4816 388 5014 ↑ 64.0 55.2 61.2

11/03 54.8 54.5 54.8 54.3 54.4 54.8 54.7 55.0 55.2 55.2 53.6 48.6 48.0 49.1 4455 393 5008 60.5 54.0 58.6

11/04 54.9 54.5 54.8 54.4 54.4 54.8 54.7 54.9 55.2 55.3 53.8 48.8 48.5 49.7 4646 465 5019 64.5 55.1 59.6

11/05 55.1 55.0 55.7 54.5 54.6 55.0 54.9 55.2 55.4 55.5 54.3 48.8 49.1 50.3 4374 40 4816 64.0 58.3 62.1

11/06 55.2 55.1 54.9 54.6 54.5 54.8 55.1 55.5 55.8 55.7 53.7 48.6 50.1 50.8 3913 130 4812 56.0 56.0 56.7

11/07 55.4 55.0 55.2 54.5 54.4 54.5 54.0 54.0 54.2 54.4 53.3 48.4 47.6 49.3 4138 207 4816 49.5 47.3 50.1

11/08 55.0 ? 54.7 55.8 54.3 54.1 54.0 53.2 53.2 53.2 53.1 52.2 48.2 46.0 47.0 4867 57 4814 46.5 44.6 49.2

11/09 55.1 ? 54.8 55.1 54.2 53.9 53.6 52.6 52.1 52.0 51.6 52.3 47.9 43.8 44.2 5010 134 4811 46.0 45.7 47.4

11/10 55.2 54.9 56.0 53.9 53.7 53.6 52.8 52.2 52.0 51.4 52.2 48.0 44.3 44.7 4961 40 4813 ↓ 44.5 41.2 43.8

11/11 55.3 55.0 55.3 53.8 53.6 53.5 52.6 52.0 51.9 51.5 52.1 47.4 44.8 44.5 4621 75 4812 ↓ 45.0 40.2 43.9

11/12 55.3 55.1 55.2 54.0 53.6 53.5 52.5 52.0 51.9 51.4 52.2 46.7 43.8 43.8 4485 83 4809 ↓ 42.5 40.2 44.6

11/13 55.2 ? 54.9 54.8 54.1 53.7 53.6 52.9 52.4 52.5 51.6 52.6 46.6 44.9 44.5 4102 303 4805 46.5 46.5 48.4

11/14 55.4 ? 55.2 54.8 54.1 53.9 54.0 53.4 52.9 52.8 52.2 52.5 46.5 45.0 45.4 4376 192 4804 45.0 46.8 48.0

11/15 55.3 ? 54.9 55.2 54.4 54.1 54.2 54.0 53.8 54.0 53.3 53.0 46.6 47.3 47.4 4412 105 4812 52.0 51.2 48.5

11/16 55.3 ? 54.9 54.8 54.6 54.5 54.7 54.2 53.8 53.9 53.6 52.8 46.5 48.0 49.0 4766 42 4815 56.5 49.8 53.4

11/17 55.0 54.5 54.8 54.5 54.3 54.4 54.1 53.9 54.2 53.8 52.4 46.4 47.3 48.6 5271 41 4612 51.0 50.9 52.1

11/18 55.2 54.5 55.2 54.5 54.5 54.8 54.7 54.8 55.0 54.5 52.8 46.4 47.5 48.6 4055 38 4423 55.0 56.0 56.3

11/19 55.4 54.9 54.5 54.3 54.3 54.5 54.0 53.9 54.1 54.3 51.8 46.3 47.0 48.2 4123 278 4407 52.0 49.5 51.3

11/20 55.6 55.2 54.7 54.2 54.0 54.1 53.4 53.1 53.2 53.2 51.5 46.1 45.9 46.9 4006 258 4411 57.0 45.5 51.3

11/21 55.6 55.3 54.6 54.2 54.0 54.1 53.2 52.7 52.6 52.3 51.3 46.0 44.3 45.0 3513 562 4404 60.0 45.5 51.3

11/22 55.5 55.1 54.9 54.3 54.0 53.9 53.1 52.6 52.6 52.2 51.0 46.0 43.9 44.1 3799 114 4221 46.5 45.1 48.5

11/23 55.4 55.0 55.0 54.3 54.2 54.3 53.6 53.1 53.0 52.5 51.2 46.1 44.6 44.9 3628 43 4014 52.0 48.6 51.3

11/24 55.4 54.9 54.6 54.3 54.2 54.3 53.6 53.3 53.2 52.9 51.2 46.0 45.2 45.3 3794 63 4010 58.0 52.7 54.3

11/25 55.1 54.5 54.9 54.2 54.1 54.1 53.6 53.2 53.1 52.9 50.9 45.8 44.1 45.3 3814 40 4010 49.5 47.2 50.8

11/26 55.2 54.5 54.2 54.1 53.9 53.8 52.7 52.2 52.1 52.1 50.4 45.6 43.4 43.9 3868 97 3934 50.0 48.3 51.2

11/27 55.1 54.4 54.4 53.9 53.7 53.7 52.6 52.0 51.6 51.3 50.4 45.3 42.7 42.5 4060 41 3861 53.0 44.6 49.4

11/28 54.9 54.3 53.8 53.8 53.6 53.5 52.4 51.7 51.5 51.2 50.0 45.2 42.6 42.0 3350 41 3850 48.5 42.3 46.7

11/29 54.8 54.2 53.3 53.7 53.5 53.3 52.2 51.7 51.3 51.0 50.1 45.1 42.7 42.0 3651 41 3862 47.5 42.4 45.7

11/30 54.7 54.0 53.1 53.6 53.4 53.3 52.1 51.6 51.3 51.0 49.8 45.0 42.8 42.3 3910 73 3827 46.5 43.0 47.5

-

Nov 4234 159 4521 48.3 51.4

127030 4756 135641

Legend Notes 251959 9433 269038

? = 1-9 hours of data missing (Average includes estimations) 1 Temperatures are weighted averages based on individual penstock flow and temperature

! = 10 or more hours of data missing (Average not calculated) Highlighted cells in the TCD column indicate a TCD change was made on that day

# = Station out of service 2 Current Sacramento River control point (see page 4 for more details)

↑ = Record high air temperature

↓ = Record low air temperature

 = Monthly Averages

53.3

IGO3

53.3

Total AF

56.9 54.8

RDB

53.0 52.1

LWS

46.9 45.7

DGC

51.1

JLF BND

Mean Daily Air 

Temperatures (°F)

RDD

70.4

Total CFS

46.3 52.4

54.4 54.8 55.9 56.4

Mean Daily 

Release (CFS)

NFH

53.3

Mean Daily Water Temperatures (°F)

49.6

54.2 54.1

54.8 54.0

54.1

55.3

53.5

D

A

T

E

54.1 53.6

CCR2 TCD SAC 1 SHD SPP1 KWK BSF

55.2 54.8 54.8

2
↓ ↑ Avg ↓ ↑ Avg ↓ ↑ Avg ↓ ↑ Avg ↓ ↑ Avg ↓ ↑ Avg ↓ ↑ Avg ↓ ↑ Avg ↓ ↑ Avg ↓ ↑ Avg ↓ ↑ Avg ↓ ↑ Avg

11/01 40 86 63.0 42 85 63.5 44 84 64.0 45 80 62.5 46 83 64.5 48 83 65.5 46 65 55.5 36 60 48.0 35 61 48.0 40 60 50.0 35 60 47.5 37 66 51.5

11/02 42 83 62.5 41 85 63.0 43 80 61.5 44 79 61.5 47 82 64.5 43 60 51.5 36 60 48.0 33 59 46.0 45 61 53.0 36 65 50.5 41 67 54.0 44 65 54.5

11/03 41 87 64.0 42 80 61.0 44 80 62.0 47 83 65.0 42 59 50.5 33 58 45.5 30 57 43.5 32 59 45.5 34 65 49.5 45 61 53.0 41 63 52.0 40 64 52.0

11/04 41 80 60.5 44 80 62.0 47 85 66.0 46 58 52.0 35 58 46.5 33 57 45.0 33 60 46.5 34 62 48.0 36 62 49.0 41 64 52.5 38 63 50.5 39 65 52.0

11/05 43 86 64.5 46 83 64.5 45 58 51.5 35 57 46.0 33 56 44.5 32 58 45.0 33 58 45.5 34 59 46.5 42 61 51.5 40 60 50.0 43 63 53.0 43 61 52.0

11/06 45 83 64.0 55 60 57.5 39 61 50.0 31 56 43.5 32 59 45.5 31 59 45.0 31 59 45.0 32 55 43.5 46 59 52.5 43 64 53.5 44 62 53.0 41 57 49.0

11/07 44 68 56.0 38 61 49.5 28 55 41.5 30 57 43.5 30 60 45.0 29 60 44.5 31 57 44.0 36 54 45.0 45 59 52.0 48 64 56.0 45 61 53.0 46 60 53.0

11/08 38 61 49.5 38 55 46.5 32 56 44.0 30 62 46.0 29 61 45.0 30 58 44.0 33 57 45.0 36 57 46.5 49 65 57.0 47 59 53.0 44 59 51.5 41 59 50.0

11/09 37 56 46.5 41 60 50.5 30 62 46.0 30 61 45.5 30 57 43.5 37 52 44.5 36 56 46.0 37 57 47.0 43 56 49.5 44 57 50.5 41 58 49.5 41 62 51.5

11/10 37 55 46.0 29 60 44.5 30 60 45.0 31 57 44.0 37 56 46.5 43 58 50.5 37 58 47.5 42 58 50.0 45 62 53.5 41 61 51.0 40 60 50.0 42 63 52.5

11/11 29 60 44.5 28 61 44.5 28 57 42.5 36 51 43.5 38 61 49.5 37 61 49.0 39 65 52.0 41 65 53.0 43 64 53.5 45 64 54.5 41 65 53.0 39 64 51.5

11/12 26 64 45.0 29 62 45.5 35 48 41.5 35 57 46.0 40 60 50.0 40 68 54.0 42 66 54.0 46 64 55.0 41 64 52.5 41 62 51.5 38 61 49.5 36 63 49.5

11/13 25 60 42.5 29 48 38.5 33 54 43.5 39 55 47.0 40 66 53.0 41 63 52.0 44 62 53.0 42 62 52.0 44 60 52.0 42 63 52.5 39 60 49.5 38 61 49.5

11/14 43 50 46.5 41 54 47.5 38 56 47.0 39 64 51.5 45 56 50.5 45 57 51.0 39 59 49.0 36 59 47.5 39 64 51.5 37 61 49.0 37 58 47.5 39 60 49.5

11/15 41 49 45.0 49 56 52.5 38 67 52.5 40 55 47.5 44 57 50.5 38 59 48.5 35 61 48.0 34 63 48.5 41 60 50.5 39 62 50.5 42 62 52.0 40 64 52.0

11/16 48 56 52.0 41 68 54.5 44 55 49.5 45 57 51.0 39 58 48.5 36 61 48.5 36 63 49.5 39 59 49.0 42 56 49.0 47 60 53.5 44 61 52.5 39 59 49.0

11/17 41 72 56.5 46 55 50.5 46 57 51.5 39 56 47.5 35 60 47.5 33 61 47.0 31 58 44.5 34 59 46.5 42 66 54.0 46 60 53.0 41 58 49.5 37 59 48.0

11/18 45 57 51.0 56 58 57.0 38 56 47.0 34 62 48.0 33 63 48.0 35 60 47.5 37 62 49.5 39 64 51.5 43 67 55.0 44 67 55.5 44 65 54.5 41 60 50.5

11/19 47 63 55.0 42 58 50.0 36 63 49.5 34 65 49.5 33 61 47.0 37 61 49.0 37 65 51.0 36 61 48.5 44 68 56.0 40 65 52.5 38 63 50.5 38 63 50.5

11/20 42 62 52.0 48 64 56.0 34 66 50.0 32 61 46.5 35 61 48.0 37 63 50.0 35 60 47.5 35 62 48.5 41 68 54.5 38 64 51.0 37 64 50.5 35 65 50.0

11/21 48 66 57.0 52 66 59.0 32 61 46.5 34 63 48.5 38 65 51.5 36 58 47.0 35 59 47.0 36 63 49.5 37 66 51.5 35 62 48.5 36 62 49.0 37 62 49.5

11/22 51 69 60.0 35 61 48.0 35 62 48.5 38 65 51.5 34 58 46.0 36 58 47.0 36 61 48.5 36 62 49.0 37 68 52.5 37 64 50.5 40 63 51.5 40 62 51.0

11/23 34 59 46.5 39 61 50.0 38 64 51.0 35 57 46.0 35 59 47.0 35 62 48.5 31 62 46.5 32 63 47.5 39 68 53.5 35 64 49.5 37 63 50.0 40 60 50.0

11/24 38 66 52.0 50 67 58.5 36 57 46.5 36 61 48.5 36 63 49.5 34 64 49.0 32 63 47.5 34 63 48.5 38 69 53.5 36 65 50.5 39 65 52.0 40 62 51.0

11/25 47 69 58.0 40 58 49.0 35 61 48.0 36 63 49.5 35 63 49.0 35 62 48.5 32 58 45.0 34 63 48.5 38 60 49.0 40 63 51.5 41 64 52.5 41 62 51.5

11/26 37 62 49.5 37 63 50.0 35 63 49.0 32 64 48.0 32 63 47.5 33 59 46.0 35 64 49.5 34 64 49.0 36 65 50.5 35 63 49.0 36 63 49.5 36 60 48.0

11/27 37 63 50.0 35 64 49.5 31 64 47.5 33 64 48.5 33 62 47.5 36 65 50.5 35 65 50.0 34 65 49.5 34 67 50.5 36 63 49.5 33 61 47.0 34 60 47.0

11/28 35 71 53.0 31 63 47.0 33 64 48.5 33 60 46.5 37 64 50.5 34 67 50.5 37 65 51.0 37 68 52.5 39 69 54.0 38 62 50.0 37 60 48.5 35 62 48.5

11/29 30 67 48.5 31 67 49.0 32 65 48.5 37 66 51.5 35 67 51.0 36 65 50.5 36 66 51.0 37 66 51.5 39 65 52.0 45 66 55.5 42 66 54.0 40 65 52.5

11/30 30 65 47.5 30 63 46.5 37 66 51.5 35 68 51.5 35 67 51.0 35 66 50.5 33 66 49.5 33 66 49.5 42 68 55.0 38 66 52.0 39 64 51.5 37 59 48.0

-

Web Links Legend

10-Day Min/Max Forecast NR = Forecasted temperatures not recorded

Previous Days Min/Max Actuals 100 = Previous day actual temperatures in red and bolded indicate a record temperature for that date

D

A

T

E

Forecasted

4 Days 5 Days 6 Days

Actual

Previous Day Current Day 1 Day 2 Days 3 Days 7 Days 9 Days 10 Days

Redding (RDD) Daily Air Temperatures (°F)

8 Days

3
Code Body of Water Location1 CDEC Link River Point Temp. (°F) Begin Date End Date

TCD N/A Shasta Power Plant N/A Sacramento BSF 56 05/15/2019 09/20/2020

SHD Sacramento River 0.3 miles downstream of Shasta Power Plant Click Here Sacramento CCR 56 09/21/2020 TBD

SPP N/A Spring Creek Power Plant N/A Trinity DGC 56 09/15/2020 10/01/2020

KWK Sacramento River 0.8 miles downstream of Keswick Dam Click Here Trinity NFH 56 10/01/2020 12/31/2020

SAC Sacramento River 4.8 miles downstream of Keswick Dam Click Here

CCR Sacramento River 9.7 miles downstream of Keswick Dam Click Here

BSF Sacramento River 25 miles downstream of Keswick Dam Click Here

JLF Sacramento River 34 miles downstream of Keswick Dam Click Here

BND Sacramento River 41 miles downstream of Keswick Dam Click Here

RDB Sacramento River 58 miles downstream of Keswick Dam Click Here

IGO Clear Creek 7.3 miles downstream of Whiskeytown Dam Click Here

LWS Trinity River 1.1 miles downstream of Lewiston Dam Click Here Notes

DGC Trinity River 19 miles downstream of Lewiston Dam Click Here

NFH Trinity River 38 miles downstream of Lewiston Dam Click Here 1 Distances are approximate

Station Details Water Right Temperature Control Points

37

40

43

46

49

52

55

58

61

64

67

52

53

54

55

56

57

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Air Temperature (°F)

Water Temperature (°F)

Mean Daily Temperatures

TCD KWK SAC CCR BSF RDD (Air)

4
Updated 11/24/2020 at 1233

Latest Profile Date: 11/24/2020

Page Description

6 - Shasta Lake Isothermobaths Plot

7 - Shasta Lake Cold Water Pool Volume ≤52°F

8 - Shasta Lake Cold Water Pool Volume ≤50°F

9 - Shasta Lake Cold Water Pool Volume ≤48°F

10 - Shasta Lake Cold Water Pool Volume ≤52°F - Percent Exceedances

11 - Shasta Lake Cold Water Pool Volume ≤50°F - Percent Exceedances

12 - Shasta Lake Cold Water Pool Volume ≤48°F - Percent Exceedances

13 - Shasta Lake Cold Water Pool Comparison by Year

Shasta Lake Isothermobaths & Cold Water Pool Statistics

2020

5
6

0

500

1000

1500

2000

2500

3000

3500

4000

4500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Shasta Lake Isothermobaths Plot - 2020

<46 46-48 48-50 50-52 52-54 54-56 56-58 58-60

60-62 62-64 64-66 66-68 68-70 >70 Storage
7

0

500

1000

1500

2000

2500

3000

3500

4000

4500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Shasta Lake Cold Water Pool Volume ≤52°F

Avg (1998-2019) 2014 2015 2016 2019 2020 2000
8

0

500

1000

1500

2000

2500

3000

3500

4000

4500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Shasta Lake Cold Water Pool Volume ≤50°F

Avg (1998-2019) 2014 2015 2016 2019 2020 2000
9

0

500

1000

1500

2000

2500

3000

3500

4000

4500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Shasta Lake Cold Water Pool Volume ≤48°F

Avg (1998-2019) 2014 2015 2016 2019 2020 2000
10

0

500

1000

1500

2000

2500

3000

3500

4000

4500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Shasta Lake Cold Water Pool Volume ≤52°F - Percent Exceedances (1998-2019)

2020 95 90 75 50 25 10 5
11

0

500

1000

1500

2000

2500

3000

3500

4000

4500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Shasta Lake Cold Water Pool Volume ≤50°F - Percent Exceedances (1998-2019)

2020 95 90 75 50 25 10 5
12

0

500

1000

1500

2000

2500

3000

3500

4000

4500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Shasta Lake Cold Water Pool Volume ≤48°F - Percent Exceedances (1998-2019)

2020 95 90 75 50 25 10 5
Nov-24

2020 ≤52° ≤50° ≤48° Abs. Avg. ≤52° ≤50° ≤48° Abs. Avg.

1998 115 7 -4 42 174 18 -46 79

1999 244 221 181 215 368 588 2255 1070

2000 147 46 14 69 222 122 171 171

2001 53 41 29 41 79 108 363 184

2002 133 102 67 101 201 272 837 437

2003 203 62 12 92 306 166 150 207

2004 68 23 10 34 102 62 125 96

2005 14 5 15 11 21 14 190 75

2006 177 139 92 136 267 370 1149 595

2007 -30 -10 15 18 -46 -26 187 86

2008 -29 -10 10 16 -43 -26 122 64

2009 -2 8 22 11 -3 22 275 100

2010 293 158 73 175 442 419 916 592

2011 458 353 283 365 690 940 3533 1721

2012 198 170 106 158 299 453 1327 693

2013 74 50 39 54 111 132 492 245

2014 -28 -20 -2 17 -43 -52 -24 40

2015 -25 -8 -8 14 -38 -22 -94 51

2016 252 223 113 196 381 592 1415 796

2017 362 298 237 299 547 792 2955 1431

2018 54 33 10 32 82 87 122 97

2019 454 366 279 366 685 973 3480 1713

2020 0 0 0 0 0 0 0 0

∆ TAF % ∆

Shasta Lake Cold Water Pool Comparison by Year (for Specified Date)

Historic - Current (Historic - Current) / Current

13
Updated 11/18/2020 at 1503

Latest Profile Date: 11/18/2020

Page Description

15 - Trinity Lake Isothermobaths Plot

16 - Trinity Lake Cold Water Pool Volume ≤52°F

17 - Trinity Lake Cold Water Pool Volume ≤50°F

18 - Trinity Lake Cold Water Pool Volume ≤48°F

19 - Trinity Lake Cold Water Pool Volume ≤52°F - Percent Exceedances

20 - Trinity Lake Cold Water Pool Volume ≤50°F - Percent Exceedances

21 - Trinity Lake Cold Water Pool Volume ≤48°F - Percent Exceedances

22 - Trinity Lake Cold Water Pool Comparison by Year

Trinity Lake Isothermobaths & Cold Water Pool Statistics

2020

14
15

0

250

500

750

1000

1250

1500

1750

2000

2250

2500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Trinity Lake Isothermobaths Plot - 2020

<46 46-48 48-50 50-52 52-54 54-56 56-58 58-60

60-62 62-64 64-66 66-68 68-70 >70 Storage
16

0

250

500

750

1000

1250

1500

1750

2000

2250

2500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Trinity Lake Cold Water Pool Volume ≤52°F

Avg (2000-2019) 2014 2015 2016 2019 2020
17

0

250

500

750

1000

1250

1500

1750

2000

2250

2500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Trinity Lake Cold Water Pool Volume ≤50°F

Avg (2000-2019) 2014 2015 2016 2019 2020
18

0

250

500

750

1000

1250

1500

1750

2000

2250

2500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Trinity Lake Cold Water Pool Volume ≤48°F

Avg (2000-2019) 2014 2015 2016 2019 2020
19

0

250

500

750

1000

1250

1500

1750

2000

2250

2500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Trinity Lake Cold Water Pool Volume ≤52°F - Percent Exceedances (2000-2019)

2020 95 90 75 50 25 10 5
20

0

250

500

750

1000

1250

1500

1750

2000

2250

2500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Trinity Lake Cold Water Pool Volume ≤50°F - Percent Exceedances (2000-2019)

2020 95 90 75 50 25 10 5
21

0

250

500

750

1000

1250

1500

1750

2000

2250

2500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Trinity Lake Cold Water Pool Volume ≤48°F - Percent Exceedances (2000-2019)

2020 95 90 75 50 25 10 5
Nov-18

2020 ≤52° ≤50° ≤48° Abs. Avg. ≤52° ≤50° ≤48° Abs. Avg.

2000 113 -5 -50 56 18 -1 -15 11

2001 -116 -112 -68 99 -19 -21 -20 20

2002 -70 -58 8 46 -11 -11 2 8

2003 201 -50 -93 115 32 -10 -28 23

2004 -116 -150 -139 135 -19 -29 -41 30

2005 314 244 148 235 51 47 44 47

2006 871 155 163 396 141 30 48 73

2007 43 65 138 82 7 13 41 20

2008 -362 -343 -221 309 -58 -66 -65 63

2009 -188 -272 -200 220 -30 -52 -59 47

2010 259 215 195 223 42 41 58 47

2011 447 283 191 307 72 54 56 61

2012 237 266 325 276 38 51 96 62

2013 -174 -175 -104 151 -28 -33 -31 31

2014 -513 -438 -287 413 -83 -84 -85 84

2015 -498 -428 -320 415 -81 -82 -94 86

2016 -83 -280 -179 181 -13 -54 -53 40

2017 199 83 48 110 32 16 14 21

2018 230 187 228 215 37 36 67 47

2019 405 412 415 410 65 79 122 89

2020 0 0 0 0 0 0 0 0

Trinity Cold Water Pool Comparison by Year (for Specified Date)

∆ TAF % ∆

Historic - Current (Historic - Current) / Current

22
Updated 11/23/2020 at 0932

Latest Profile Date: 11/19/2020

Page Description

24 - Whiskeytown Lake Isothermobaths Plot

25 - Whiskeytown Lake Cold Water Pool Volume ≤60°F

26 - Whiskeytown Lake Cold Water Pool Volume ≤58°F

27 - Whiskeytown Lake Cold Water Pool Volume ≤56°F

28 - Whiskeytown Lake Cold Water Pool Volume ≤60°F - Percent Exceedances

29 - Whiskeytown Lake Cold Water Pool Volume ≤58°F - Percent Exceedances

30 - Whiskeytown Lake Cold Water Pool Volume ≤56°F - Percent Exceedances

31 - Whiskeytown Lake Cold Water Pool Comparison by Year

Whiskeytown Lake Isothermobaths & Cold Water Pool Statistics

2020

23
24

0

50

100

150

200

250

300

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Whiskeytown Lake Isothermobaths Plot - 2020

<46 46-48 48-50 50-52 52-54 54-56 56-58 58-60

60-62 62-64 64-66 66-68 68-70 >70 Storage
25

0

50

100

150

200

250

300

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Whiskeytown Lake Cold Water Pool Volume ≤60°F

Avg (2000-2019) 2014 2015 2016 2019 2020
26

0

50

100

150

200

250

300

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Whiskeytown Lake Cold Water Pool Volume ≤58°F

Avg (2000-2019) 2014 2015 2016 2019 2020
27

0

50

100

150

200

250

300

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Whiskeytown Lake Cold Water Pool Volume ≤56°F

Avg (2000-2019) 2014 2015 2016 2019 2020
28

0

50

100

150

200

250

300

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Whiskeytown Lake Cold Water Pool Volume ≤60°F - Percent Exceedances (2000-2019)

2020 95 90 75 50 25 10 5
29

0

50

100

150

200

250

300

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Whiskeytown Lake Cold Water Pool Volume ≤58°F - Percent Exceedances (2000-2019)

2020 95 90 75 50 25 10 5
30

0

50

100

150

200

250

300

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Whiskeytown Lake Cold Water Pool Volume ≤56°F - Percent Exceedances (2000-2019)

2020 95 90 75 50 25 10 5
Nov-19

2020 ≤60° ≤58° ≤56° Abs. Avg. ≤60° ≤58° ≤56° Abs. Avg.

2000 -33 -35 -38 35 -16 -17 -19 17

2001 0 0 1 0 0 0 0 0

2002 -11 -12 -16 13 -6 -6 -8 6

2003 18 19 -66 34 9 9 -33 17

2004 21 21 22 21 10 10 11 10

2005 2 2 -116 40 1 1 -57 20

2006 -16 -17 -17 17 -8 -8 -9 8

2007 1 1 -103 35 1 1 -51 17

2008 2 2 3 2 1 1 1 1

2009 -20 -24 -44 29 -10 -12 -21 14

2010 7 -85 -93 62 3 -42 -46 30

2011 1 2 3 2 1 1 1 1

2012 1 -91 -106 66 1 -44 -52 32

2013 17 -41 -46 35 8 -20 -23 17

2014 -27 -41 -67 45 -13 -20 -33 22

2015 1 -143 -157 100 0 -70 -77 49

2016 7 -97 -109 71 3 -47 -54 35

2017 4 -30 -33 22 2 -15 -16 11

2018 11 11 -164 62 5 5 -81 31

2019 3 3 -109 38 1 1 -54 19

2020 0 0 0 0 0 0 0 0

∆ TAF % ∆

Whiskeytown Cold Water Pool Comparison by Year (for Specified Date)

Historic - Current (Historic - Current) / Current

31